A US military Black Hawk helicopter crashed off the southern coast of Yemen while training its crew, leaving one service member missing, officials said.
Five others aboard the aircraft were rescued, officials said in a statement issued by US Central Command.
The crash took place on August 25. Officials said the accident was under investigation.
Two UH-60 Black Hawk helicopters from Company C, 1st Battalion, 207th Aviation Regiment. Photo from DoD.
Asked if the crash involved another special forces raid, Central Command told The Associated Press that "this was a routine training event specifically for US military personnel."
"Training events such as this are routinely held by US forces within a theater of operations in order to maintain their proficiency within the operating environment," CENTCOM told the AP in a statement.
"Commanders deemed this location appropriate and safe for a routine training event, considering both the operational environment and weather conditions at the time."
A Missouri Army National Guard UH-60 Black Hawk utility helicopter (left) sits next to an AH-64 Apache attack helicopter on the flightline. USAF photo by Airman 1st Class Michaela R. Slanchik.
Yemen is located on the southern end of the Arabian Peninsula.
The United States has been carrying out airstrikes against al-Qaeda in Yemen, with at least 80 launched since the end of February.
A small number of ground raids using US Special Operations forces have also taken place, including one in January which resulted in the death of a US Navy Seal.